Attachment for artesian wells



No 627,25l. Patented lune 20,"|?9'9.-

|'.v cAvALLARo.

ATTAHMENT FOR 'IARTESIAN WELLS;

(Application led Feb. 20, 1899.)

(No Model.)

Nirn Tains aTnNT Prion.

FRANCISCO CAVALLARO, OFV SAN JOS, CALIFORNIA, `ASSIGNOR OF ONE- TIIIRI) TO IGNAZIO TRAPANI, OF SAN FRANCISCO, CALIFORNIA.

ATTACl-HVIEN'I' ARTESIAN WELLS.

SPECIFICATION forming part of Letters Patent No. 627,251, dated J une 20, 1899.

Application led'liis 20, 1899. Serial No. 706,134. (No model.)

T0 all whom, t may cm1/cern.- A l Beitknown that I, FRANCISCO CAVALLARQ, a citizen of the United States, residing at San Jos, county of Santa Clara, State of California, have invented an Improvement in At tachments for Artesian IVells; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to improvements in Artesian wells.

It consists, essentially, in the combination, with the well and its casing, of an annular chamber adapted to fit within the casing,with gasket and expanding device for making a tight joint between the two, and concentric pipes fixed to and extending downwardly from the chamber within thewell-casing and forming an air-chamber exterior to the suctionpipe, one or more pipes through which air may be forced under pressure intosaid chamber, whereby the body of water within the well may be forced upwardly to the surface.

It also comprises details of 'construction which will be more fully explained by reference to the accompanying drawings, in which- Figure l is a vertical section on line a: of Fig. 3. Fig. 2 is a top view of the guide-nut. Fig. 3 is a horizontal section on line y f1] of Fig. 1.

A is the well-casing.

B is a suction-pipe extending down to any suitable point within the well. Fixed upon the bottom of this pipe is a flanged disk or open-bottomed chamber C, having an expansible rubber gasket D, of approximately the same diameter, iixed upon the top and having an upwardly-diverging interior which is adapted to receive an expanding device E. This is in the form of a cone adapted to enter the gasket D and press its sides outwardly,

so as to make a tight fit between it and the sides of the wellcasing.

In the present case I have shown a novel means for operating the expander E. A tube they forni guides upon which the head of the expander is slidable as it is raised or depressed. Upon the upper end of the tube F is a nut H, loosely turnable upon a flange or other guide at the top of the pipe F. The interior of this nut is turnable upon a screwthreaded exterior portion of the suction-pipe B, and when it is thus turned it will advance the tube F and the expander E in either direction, the expander being prevented from turning by the guide-pins G, as shown.

B is a continuation of the suction-pipe B, and it extends to a point from near the bottom of the well. Threaded to the interior of the outer flange lof the casting C is'another pipe I, concentric with the` pipe B and with the casing A, and this pipe I extends down and terminates at a point a greater distance abovel the bottom of the well than the pipe B. The space between the pipes B' and I forms a chamber into which air is introduced through an air-pipe J, extending from the surface'pand passing through the casting C, so thati air under any desired pressure may be delivered into the chamber between the pipes Band I. As the water within the well normallyrises up to a considerable distance within the pipe B and between it and the pipe I, the pressure of the air upon the surface of the water between the two pipes acts to force the water upward within the pipe B B', and this pressure may be of any desired degree, so as to either force the water entirely out of the well, or by maintaining a certain pressure the water which ows into the well will be caused to rise to a much higher point continuously than it would undernormal conditions, so that itwill be within easy reach of the pump. By closing the air-pipe and applying a strong suction through the suction-pipe an increased iiow of water into the well is effected.

Having thus described my invention, what I claim as new, anddesire to secure by Letters Patent, isv 1. The combination with the casing and the suction-tube thereof, of an annular casting surrounding the lower suction-tube and form- IOO ing an air-chamber, an expansible gasket ixed to the upper surface of the casting, an expander adapted to enter and expand said gasket, vertical guide-pins fixed in said easting and passing loosely through the expander, a tube surrounding the suction-pipe and connectedwith the expander, and a follower swiveled upon the upper portion of the tube and threaded upon the suction-pipe whereby the expander and connected parts are raised and lowered.

2. The combination with the casing and the suction-tube, of an annularopen-bottom cast ing loosely fitting the casing and disposed around the lower portion of the tube, an expansible gasket fixed to the uppervportion of the casting, a conical expander adapted to engage the interior of the gasket, vertical guide-pins fixed in said Casting and passing loosely through the expander, a tube surroundingthesuction-pipe andhavingitslower end secured to the expander, a central extension B ofthe lower end oi the suction-tube, extending to a point near the bottom of the Well and a single tubular extension I connected with the inner wall of the casting and extending downward to a less distance intermediate between the casing and the extension of the suction-pipe and forming an air-chamber between itself and said extension B', an airpipe passing through the expander and gasket and entering said air-chamber, and a nut and Collar turnable upon the upper portion of the tube which carries the expander said eollar engaging threads upon the outside of the suction-tube whereby the expander is raised and lowered.

In witness whereof I have hereunto set my hand.

FRANCISCO CAVALLARO.

Witnesses:

H. S. KITTREDGE, ED. F. MCLELLAN. 

